Recent development: The doctor says this may have been triggered by a recent fall. Dad is starting Zoloft, but we need to keep him safe until it takes effect, which is about 4 weeks. My sisters and I provide 24/7 care for him but, he called 911 on his own last night and told the paramedics he wanted to kill himself. There are no firearms in his home, but we want to secure sharp objects and chemicals. His medications are already secured.